WO1997025467A1 - Cold water washing formula - Google Patents
Cold water washing formula Download PDFInfo
- Publication number
- WO1997025467A1 WO1997025467A1 PCT/US1996/020899 US9620899W WO9725467A1 WO 1997025467 A1 WO1997025467 A1 WO 1997025467A1 US 9620899 W US9620899 W US 9620899W WO 9725467 A1 WO9725467 A1 WO 9725467A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rinse solution
- textile
- internal assembly
- wash
- break
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000005406 washing Methods 0.000 title claims abstract description 54
- 239000004753 textile Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 68
- 239000002689 soil Substances 0.000 claims abstract description 48
- 239000004094 surface-active agent Substances 0.000 claims abstract description 38
- 239000002904 solvent Substances 0.000 claims abstract description 26
- 239000002253 acid Substances 0.000 claims abstract description 22
- 239000003513 alkali Substances 0.000 claims abstract description 14
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 58
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 18
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 7
- 239000011707 mineral Substances 0.000 claims description 7
- 239000000375 suspending agent Substances 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 150000007513 acids Chemical class 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 235000015096 spirit Nutrition 0.000 claims description 4
- 241000207199 Citrus Species 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 235000020971 citrus fruits Nutrition 0.000 claims description 3
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 3
- 150000007524 organic acids Chemical class 0.000 claims description 3
- 235000005985 organic acids Nutrition 0.000 claims description 3
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- -1 terpene hydrocarbons Chemical class 0.000 claims description 3
- 235000007586 terpenes Nutrition 0.000 claims description 3
- RLQWHDODQVOVKU-UHFFFAOYSA-N tetrapotassium;silicate Chemical compound [K+].[K+].[K+].[K+].[O-][Si]([O-])([O-])[O-] RLQWHDODQVOVKU-UHFFFAOYSA-N 0.000 claims description 3
- POWFTOSLLWLEBN-UHFFFAOYSA-N tetrasodium;silicate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-][Si]([O-])([O-])[O-] POWFTOSLLWLEBN-UHFFFAOYSA-N 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 4
- 229960000583 acetic acid Drugs 0.000 claims 2
- 229940093915 gynecological organic acid Drugs 0.000 claims 2
- 239000003208 petroleum Substances 0.000 claims 2
- 239000012362 glacial acetic acid Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 17
- XMGQYMWWDOXHJM-JTQLQIEISA-N (+)-α-limonene Chemical compound CC(=C)[C@@H]1CCC(C)=CC1 XMGQYMWWDOXHJM-JTQLQIEISA-N 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 238000007792 addition Methods 0.000 description 7
- 239000004615 ingredient Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000007844 bleaching agent Substances 0.000 description 6
- 125000004430 oxygen atom Chemical group O* 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007792 gaseous phase Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 240000006108 Allium ampeloprasum Species 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/22—Processes involving successive treatments with aqueous and organic agents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/50—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs by irradiation or ozonisation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/12—Soft surfaces, e.g. textile
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/40—Specific cleaning or washing processes
- C11D2111/44—Multi-step processes
Definitions
- the present invention relates generally to a method of cold water washing to clean and deodorize textiles. More specifically, this invention relates to a method of washing textiles that utilizes ozone, surfactants, solvents, acids and alkalis to increase the efficiency of the laundry wash process.
- Ozone (0 3 ) is a triatomic allotrope of oxygen in which the ozone molecule consists of three oxygen atoms in contrast to the two oxygen atoms which comprise the typical oxygen molecule (O ⁇ .
- Ozone can be generated by passing air or oxygen through a high intensity electric field. Some of the oxygen molecules will be energized and will split into two separate atoms. These individual oxygen atoms will then form weak bonds with other oxygen molecules.
- the ozone molecule is oxygen in a highly reactive form, which has a tendency to give up its extra oxygen atom and gain electrons. This molecular structure gives ozone its high oxidizing power which allows ozone to react rapidly with a large variety of compounds.
- Ozone has been primarily employed in disinfection of culinary water and municipal waste water treatment, it can perform other functions such as color reduction, odor and taste removal, and oxidation of inorganic and organic compounds in water. Ozone acts as a positively charged molecule that is electron deficient.
- Organic and hydrocarbon stains such as greases, fats, and oils have centers of high electron density and carry a negative charge.
- ozone When ozone is introduced into a washing machine, it is attracted to these molecules and subsequently reacts chemically with the soil in an oxidation process. The kinetics of the reaction between soil and ozone is very high; thus, the reaction between these two substances is extremely fast.
- Ozone will begin to react within a fraction of a second after contact. In the process, ozone will give up its third oxygen atom, which will chemically bond with the soil molecule.
- An oxygen atom is highly electronegative and when added to a soil molecule, the electronegative charge will cause the chemical double bond of the molecule to polarize (reverse charge).
- Polarization will cause a large soil molecule to fragment into several smaller molecules.
- the strength of attachment between soil and a textile is largely a function of the size of the soil molecule. Smaller soil molecules will be more easily removed from the textile.
- the size of the molecule also has a direct effect on the solubility of the soil whereby a reduction in molecular size of the soil will greatly increase the amount of soil that is dissolved in the wash liquor.
- Surfactants and alkalis are used in most laundry detergents. Their main purpose is to suspend soil by bonding with the soil molecules to prevent re- deposition of the soil. Additionally, surfactants play a key role in loosening of the soil. Some soils can be removed from the textile surface by mechanical action and water alone, but the majority cannot. Thus, a major part of the role of the surfactant is to loosen and dissolve soil from the textile. However, this task can be facilitated by ozone.
- a primary purpose of ozone in laundry processing is to remove the soil from the textile through polarization.
- a secondary purpose is to oxidize the soil molecules, making it more soluble and allowing for faster precipitation. Ozone is in a highly reactive gaseous form in laundry processing, allowing it to react with and remove soil at a greatly increased rate which accounts for a substantial reduction in processing time.
- Alkalis are used for controlling the pH and active alkalinity of the wash water. Alkalis bond with cations, such as calcium and magnesium, allowing surfactants to react with soils more effectively. Alkalis can sequester the hardness in water and can prevent calcium and magnesium from forming insoluble soaps. Alkalis have superior soil suspending properties which contribute to the function of surfactants and ozone. Thus, when using ozone as a wash chemical, it is only necessary to use a small amount of alkali on heavy industrial soil and in the bleach cycle for pH control.
- Solvents are used to hold other substances, such as surfactants and alkalis, in solution and dissolve soils found on the textile to be cleaned.
- ozone in the laundry process reduces or eliminates the need for other laundry chemicals and finishing products such as antichlor, "sour” , bactericides, and mildewcides.
- Antichlor is used to neutralize any residual chlorine bleach. Ozone oxidizes chlorine bleach and completely neutralizes it. For this reason, ozone is not used in a chlorine bleach cycle. However, since ozone has bleaching capability, the need for chlorine bleach is reduced and, consequently, the need for antichlor is likewise reduced. Sour is used to neutralize the effects of -3- alkali on the pH of the wash solution. Since the use of ozone greatly reduces the need for alkali, the need for sour is also reduced or altogether eliminated.
- Ozone is the strongest oxidant commercially available for the treatment of water. Due to ozone's high oxidation potential, the duration of the wash cycle can be reduced relative to those cycles using chlorine as an oxidant, while attaining the same or higher oxidative capabilities. Wash temperatures and alkalinity can also be reduced. These contribute to increased textile life by decreasing stress on the fabric through limited mechanical action, more neutral pH's and lower temperatures. It also enhances washroom throughput. It would be an improvement in the art to have a relatively economical, reliable cold water washing formula and method of washing and deodorizing textiles such as garments or linens.
- the present invention includes a cold water wash formula and methods of using the cold water wash to clean textiles.
- the invention concerns the use of ozone, a surfactant, a solvent, an acid, and an alkali for the purpose of cleaning heavily soiled textiles.
- the washing method comprises introducing the textile and a "first break wash" into the internal assembly of a washing machine, thus wetting the textile with the water and solvent in order to initiate soil removal.
- a "break wash” is a chemical bath wherein a surfactant, a solvent, and/or an alkali is added to a wash to initiate soil removal.
- the first break wash comprises water and a solvent.
- a second break wash comprising a surfactant and an alkali, is added to the existing mixture.
- the resulting first and second break wash mixture is drained from the internal assembly of the washing machine.
- the textiles are then rinsed with, for example, water.
- a combination of ozone gas, oxygen and /or oxygen enriched air is mixed into a liquid mixture, comprising water and an acid, to form an ozonated wash mixture.
- the ozonated wash mixture is then removed and the textiles are rinsed with ozonated water.
- the textiles are contacted with the various mixtures of wash liquids and rinses at temperatures ranging from about 4°C (40°F) to about 49°C (120°F).
- the textiles are contacted by ozonated water, either alone or in combination with other described ingredients, for a period of time ranging from about 1 minute to about 30 minutes.
- the total wash time of the method ranges from about 25 minutes to about 125 minutes.
- FIG. 1 is a block diagram illustrating the principal components of a washing machine utilizing an ozone injection system which may be used to carry out the method of the present invention.
- the cold water (i.e. water below a temperature of about 52°C (about 125°F)) washing method includes sufficient amounts of the selected ingredients within each of the appropriate operational steps to clean and deodorize textiles.
- the actual amounts of ingredients will be highly dependent upon the amount and type of soils found on the textiles to be washed.
- the method is carried out in five steps, consisting of two break operations followed by three rinse operations.
- the first break operation comprises introducing the textile, water, and a solvent into the internal assembly of a washing machine (FIG. 1) in order to initiate soil removal from the textile.
- the first break operation lasts for a period of time from about 1 minute to about 30 minutes and is maintained at a temperature range of from about 27°C (80°F) to about 49°C (120°F).
- the second break operation comprises adding surfactants and an alkali to the contents of the first break operation.
- the second break operation lasts for a period of time from about 1 minute to about 30 minutes and is maintained at a temperature range of about 27°C (80°F) to about 49°C (120°F).
- the liquid contents of the internal assembly of the washing machine are drained, leaving the wetted textile within the internal assembly of the washing machine.
- the first rinse operation comprises rinsing the textiles with a first rinse solution which includes water (e.g. "softened” water).
- a first rinse solution which includes water (e.g. "softened” water).
- a high water level consisting of from about 35 liters to about 56 liters (ten gallons to about fifteen gallons) of water per five kilograms to ten kilograms (10 pounds to 20 pounds) of laundry, is used in the first rinse operation.
- the first rinse operation is preferably maintained at a temperature range of about 27°C (80°F) to about 49°C (120°F) and lasts for a period of time from about 1 minute to about 10 minutes. After completion of the first rinse operation, the water is drained from the internal assembly of the washing machine.
- the second rinse operation comprises rinsing the textiles with a second rinse solution containing ozonated water and an acid.
- the ozonated water contains ozone at a concentration, in the gaseous phase, of up to about 15 % by weight.
- the second rinse operation is preferably maintained at a temperature range of about 27°C (80°F) to about 43°C (110°F) and lasts for a period of time from about 1 minute to about 10 minutes.
- the third rinse operation comprises rinsing the textiles with a third rinse solution comprising ozonated water.
- the ozonated water of the third rinse operation contains ozone at a concentration, in the gaseous phase, of up to about 15 % by weight.
- the third rinse operation is preferably maintained at a temperature range of about 21°C (70°F) to about 38°C (100°F) and lasts for a period of time from about 1 minute to about 10 minutes.
- the ozone gas is generated from oxygen or oxygen-enriched air by a corona discharge device that produces concentrations ranging between about 1 % to about 15 % by weight of ozone.
- the combination of ozone gas, oxygen and/or oxygen enriched air introduced into the liquid mixture comprises bubbles of gas having a size from about 5 microns to about 5000 microns in diameter entrained in the liquid portion of the liquid mixture.
- the concentration of ozone in the ozonated wash liquid ranges from about 0.01 ppm to about 50 ppm depending upon the nature of the textile and the soil type and content.
- the pH of the ozonated wash liquid is maintained at a pH from about 3 to about 6.
- the pH of the liquid mixture throughout the entire method i.e. ozonated and non-ozonated steps) is maintained at a pH from about 3 to about 13.
- the preferred pH range is from about 4.4 to about 11.8.
- the temperature of the wash liquor is preferably maintained at a temperature in the range of about 10°C (50°F) to about 43°C (110°F).
- the method will use non-ionic surfactants.
- Preferred non-ionic surfactants contain either an alkyl ethoxylate or nonylphenol surfactants as a principal ingredient, and are commercially available under the trade designations "STAUNCH” and "RD-88” (both available from Unichem Corp. , Chicago, 111.).
- a preferred solvent, containing terpene hydrocarbons in combination with a citrus extract, is D-limonene, commercially available from Van Waters & Rogers, Salt Lake City, Utah.
- Other preferred solvents include mineral spirits, petroleum- based solvents, terpene hydrocarbons, citrus based solvents, or a combination thereof.
- compositions containing a combination of mineral spirits and petroleum- based solvents as principal ingredients are commercially available under the trade designations "RESERVE BASE” (available from Unichem Corp. , Chicago, 111.) and "FB SPECIAL” (available from Diversey Wyandotte Corp. , Wyandotte, MI).
- Water is preferably used in the present invention as a carrier for ozone molecules.
- Preferred alkalis include sodium metasilicate, potassium orthosilicate, sodium orthosilicate, potassium metasilicate, sodium hydroxide, potassium hydroxide, and mixtures thereof.
- Preferred acids include organic acids, mineral acids, and mixtures thereof.
- the acid used in the preferred mode is acetic acid, from Fisher Scientific, Fair Lawn, NJ. However, it should be understood that any comparable acid known in the art capable of modifying the pH of the cold water wash without damaging the textile or washing machine can be used.
- Another preferred method further includes a "sudsing" operation (also known as a “suds wash”) following the first rinse operation and a final rinse operation following the third rinse operation of the previously described preferred method.
- a "sudsing" operation is a chemical bath occurring between the break bath and the bleach bath or rinse cycle.
- the sudsing operation comprises introducing ozonated water, a surfactant, a solvent, an acid, and a suspending agent to the textiles, said textiles having been subjected to two break operations and one rinse operation.
- the sudsing operation lasts for a period of time from about 1 minute to about 30 minutes and is maintained at a temperature range of about 27°C (80°F) to about 49°C (120°F).
- the pH of the sudsing liquid is preferably maintained at a range from about 3 to about 6. After completion of the sudsing operation, the liquid contents of the internal assembly of the washing machine are drained.
- the final rinse operation comprises rinsing the textiles with non-ozonated water.
- the final rinse operation lasts for a period of time from about 1 minute to about 10 minutes and is maintained at a temperature range of about 10°C (50°F) to about 27°C (80°F).
- the pH is maintained at a range from about 6 to about 9.
- the method is completed by draining the rinse solution.
- draining or "removing" a liquid from the washing machine or one of its components involves the removal of a majority of the liquid from the machine or its components so as not to substantially interfere with the next step in the process or the process itself. Complete removal of liquid is of course not necessary, and nearly always some rinse, wash or suds liquid will remain associated with the textile to be cleaned.
- a preferred suspending agent is carboxymethyl cellulose, available from Sigma Chemical Co. , St. Louis, MO. It is understood that other comparable suspending agents known in the art capable of maintaining the chemicals used in the present method in solution can be used (e.g. sodium metasilicate and sodium polyacrylate) .
- Step 1 Break (no 29.4 8 35°C 8.0 drain) 50 ml liters (95°F) solvent (FB (7.75
- Step 4 Rinse 49.2 8 27°C 4.4
- Step 5 Rinse 49.2 3 21°C 5.2
- the cold water wash method was conducted on a 13.6 kilogram (30 pound) capacity "SPEED QUEEN" washing machine, available from Speed Queen Company, Ripon, WI. The wash method was performed on heavily soiled textiles. The method of EXAMPLE I resulted in a thoroughly cleansed and deodorized wash load. EXAMPLE ⁇ A method of cold water washing to clean and deodorize textiles was conducted as follows:
- Step 1 Break (no 29.4 liters 10 41°C 8.0 drain) 100 ml (7.75 gal) (105°F) solvent (FB SPECIAL)
- Step 2 Break 29.4 liters 8 41°C 11.8
- Step 3 Rinse 49.2 liters 5 41°C 11.4
- Step 4 Suds 29.4 liters 10 32°C 4.4
- Step 5 Ozone 49.2 liters 15 27°C 4.4
- Step 6 Rinse 49.2 liters 3 21°C 5.2
- Step 7 Rinse 49.2 liters 3 16°C 7.8
- the cold water wash method was conducted on a 13.6 kilogram (30 pound) capacity "SPEED QUEEN" washing machine.
- the wash method was performed on heavily soiled textiles.
- the method of EXAMPLE II resulted in a thoroughly cleansed and deodorized wash load. 97/25467 PC17US96/20899
- EXAMPLE III A method of cold water washing to clean and deodorize textiles was conducted using the same method as described in EXAMPLE II, except that the concentration of chemicals used was reduced by 50 percent. The ozone concentrations in steps 4, 5, and 6 remained. constant. The heavily soiled textiles washed in EXAMPLE HI were substantially similar with respect to soil content as those used in EXAMPLE ⁇ .
- Step 1 Break (no 29.4 10 41 °C 8.0 drain) 50 ml liters (105°F) solvent (FB SPECIAL) (7.75 gal)
- Step 4 Suds 29.4 10 32°C 4.4
- Step 5 Ozone 49.2 15 27°C 4.4
- Step 6 Rinse 49.2 3 21°C 5.2
- Step 7 Rinse 49.2 3 16°C 7.8
- EXAMPLE IV A method of cold water washing to clean and deodorize textiles was conducted using the same method as described in EXAMPLE II, except that the concentration of chemicals used was increased by 100 percent. The ozone concentrations in steps 4, 5, and 6 remained constant. The heavily soiled textiles washed in EXAMPLE IV were substantially similar with respect to soil content as those used in EXAMPLE JJ.
- Step 1 Break (no 29.4 liters 10 41 °C 8.0 drain) 200 ml (7.75 gal) (105TF) solvent (FB Special)
- Step 2 Break 29.4 liters 8 41 °C 11.8
- Step 3 Rinse 49.2 liters 5 41°C 11.4
- Step 4 Suds 29.4 liters 10 32°C 4.4
- Step 5 Ozone 49.2 liters 15 27°C 4.4
- Step 6 Rinse 49.2 liters 3 21°C 5.2
- Step 7 Rinse 49.2 liters 3 16°C 7.8
- EXAMPLE IV The results of the method of EXAMPLE IV were substantially indistinguishable from the results described in EXAMPLE JJ.
- EXAMPLE V A method of cold water washing to clean and deodorize textiles was conducted using the same method as described in EXAMPLE I, except that the organic solvent combination used in the break operation of step 1 was "RESERVE BASE” instead of "FB SPECIAL". All other ingredients, quantities, and durations were similar to those found in EXAMPLE I.
- the heavily soiled textiles washed in EXAMPLE V were substantially similar with respect to soil content as those used in EXAMPLE I.
- the results of the method of EXAMPLE V were substantially indistinguishable from the results described in EXAMPLE I.
- EXAMPLE VI A method of cold water washing to clean and deodorize textiles was conducted using the same method as described in EXAMPLE II, except that the organic solvent combination used in the break operation of step 1 was "RESERVE BASE” instead of "FB SPECIAL". All other ingredients, quantities, and durations were similar to those found in EXAMPLE JJ.
- the heavily soiled textiles washed in EXAMPLE VI were substantially similar with respect to soil content as those used in EXAMPLE JJ.
- the results of the method of EXAMPLE VI were substantially indistinguishable from the results described in EXAMPLE II.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU15361/97A AU1536197A (en) | 1996-01-03 | 1996-12-31 | Cold water washing formula |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/582,612 US5763382A (en) | 1996-01-03 | 1996-01-03 | Cold water wash formula |
US582,612 | 1996-01-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997025467A1 true WO1997025467A1 (en) | 1997-07-17 |
Family
ID=24329817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/020899 WO1997025467A1 (en) | 1996-01-03 | 1996-12-31 | Cold water washing formula |
Country Status (3)
Country | Link |
---|---|
US (2) | US5763382A (en) |
AU (1) | AU1536197A (en) |
WO (1) | WO1997025467A1 (en) |
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US3065620A (en) * | 1961-06-27 | 1962-11-27 | Gen Electric | Washing machine |
US5089162A (en) * | 1989-05-08 | 1992-02-18 | Lever Brothers Company, Division Of Conopco, Inc. | Cleaning compositions with bleach-stable colorant |
US5097556A (en) * | 1991-02-26 | 1992-03-24 | O3 Technologies, Inc. | Laundry waste water treatment and wash process |
US5404732A (en) * | 1992-10-16 | 1995-04-11 | Samsung Electronics Co., Ltd. | Automatic washing machine using ozone |
JPH06313194A (en) * | 1993-05-06 | 1994-11-08 | Adeka Clean Eido:Kk | Germicidal detergent composition |
WO1995006712A1 (en) * | 1993-08-30 | 1995-03-09 | Ecolab Inc. | Potentiated aqueous ozone cleaning composition for removal of a contaminating soil from a surface |
US5493743A (en) * | 1994-07-22 | 1996-02-27 | Tri-O-Clean Laundry, Inc. | Ozone assisted laundry wash process and waste water treatment system |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000063340A1 (en) * | 1999-04-16 | 2000-10-26 | The Dow Chemical Company | Method and composition for reduced water damage laundry care |
WO2004007656A1 (en) * | 2002-07-12 | 2004-01-22 | Fabric Care Research Association Limited | A method of laundering articles |
Also Published As
Publication number | Publication date |
---|---|
US5763382A (en) | 1998-06-09 |
US5645608A (en) | 1997-07-08 |
AU1536197A (en) | 1997-08-01 |
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